12982820 has 12 divisors (see below), whose sum is σ = 27263964. Its totient is φ = 5193120.

The previous prime is 12982793. The next prime is 12982859. The reversal of 12982820 is 2828921.

It can be written as a sum of positive squares in 2 ways, for example, as 1517824 + 11464996 = 1232^2 + 3386^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324551 + ... + 324590.

It is an arithmetic number, because the mean of its divisors is an integer number (2271997).

Almost surely, 2^12982820 is an apocalyptic number.

12982820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12982820 is an abundant number, since it is smaller than the sum of its proper divisors (14281144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12982820 is a wasteful number, since it uses less digits than its factorization.

12982820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649150 (or 649148 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 12982820 is about 3603.1680504800. The cubic root of 12982820 is about 235.0298438030.

The spelling of 12982820 in words is "twelve million, nine hundred eighty-two thousand, eight hundred twenty".